Air heater



I Sept. 23, 1930i FRQELICH 1,776,725

AIR HEATER 'Filed Jan. 17, 1930 3 Sheets-Sheet l Inventor zzmwz 2 065% Atiomcy Sept. 23, 1930. R. FROELICH 1,776,725

AIR HEATER Filed Jan. 1'7. 1930 3 Shoets-She et 2 Inventor Attorney p23,1930. R. FROE LICH I 1,776,725

AIR HEATER Filed Jan. 17, 19:50 SQSheets-Sheet a J I Inventor e. L F TI3o 7 70Z Z EMZJ A fforney Patented Sept. 23, 1930 UNITED s' z triasRUDOLPH FRoELroH, F HALSTEAID, KANSAS AIR HEATER Application filedJanuary 17, 1930. Serial No. 421,440.

vention resides in the provision' of an air heater of this nature whichis exceedingly simple in its construction, inexpensive to manufacture,compact and convenient in its arrangement of parts, strong and durable,thoroughlyefiicient and reliable in use and operation, and otherwisewell adapted tothe purpose for which it is designed. I

With the above and numerous other objects in view as will appear asthedescription proceeds, the invention resides in certain novel features ofconstruction, and in the combination and arrangement of parts as will beIn the drawing:

Figure 1 is'a perspective view of the air heater embodying the featuresof my invention, looking at the front thereof,

Figure 2 is a similar view looking at therear thereof,

Figure 8 is a vertical longitudinal section therethrough,

Figure 4 is a top plan view of the base frame with the heating elementmounted therein, taken on the line 4-4 of Figure 3.

Figure 5 is a vertical transverse section taken substantially on theline 55 of Figure 3, I t

Figure 6 is a vertical transverse section taken substantially on theline 6-6 of Figure 3 and Figure 7 is a horizontal section takensubstantially on the line 7-7 of Figure 3.

Referring to the drawing it will be seen that the numeral 5 denotes arectangular base frame supported on suitable legs 6 and having at itsupper edge an inwardly directed flange 7.

A. rectangular casing 8 comprises four walls rising from the base frame5 and is hereinafter more fully described and claimed.

formed atits bottom-edges with inwardly directed flanges 9 to rest onflange 7. A removable hollow top 10 is mounted on the upper edges of thewalls of the casing. An inner compartment 11 is formed by a pair oflongitudinally extending walls 12 spaced in wardly from the side wallsof the casing 8 and extending between the walls thereof in spacedrelation to each other and having formed on their bottom edge a curvedbot tom or hot plate 14. r

A top plate 15 is mounted between the upper ends of the walls 12.- Abaffle or partition plate 16 extends from one end wall inwardlyterminating a distance from the other end wall. This baffle-16 has adepression 17 formedtherein adjacent one end wall of the casing for thepurpose of containing water or the like.

An opening is provided in one end wall between the top plate 15 and thebaffle plate 16 and a reticulated door 19 is 'hingedly mounted to thecasing'S over the opening. The bottom portion of the other end wall isprovided with an opening of circular construction having a reticulatedsheet 20 thereacross and an inwardly extending cylindrical member 21 inwhich is located an electric motor 22 and a fan 23 for the purpose ofsucking air into the compartment 11 and forcing said airover the hotplate 14 and then up under the baflie and then over the battle as isindicatedby arrows 25 and 26 and finally pass over the water in thedepression 17 and out through the reticulated door 19 into the room.

Asupporting bar 28 extends longitudinally in the base frame 5 andsupportsa plurality of gas burners 29 access .to which may be hadthrough a door 30 in the front side of the base frame. A suitablecontrol 31 such as a rheostat or the like is provided on the outside ofthe casing for controlling the speed of'the motor 22 and the fan 23.

From the above detailed description it will be seen that the gas burnerswill effectively heat the hot plate and the gases of combustion mayescape between the rear wall 12 and j the adjacent wall of the casing 8through an opening 84 in the rear of the casing having licing any of itsadvantages.

an annular flange so that a stove pipe or the like may be engagedtherewith to take these gases off to the exterior of the building or thelike. i

The heating of the hot plate, of course, heats the air inside the comprtment 11 and by means of the fan new supply of air is Constantly beinginjected into the compart purposes of eXemplificat-ion since in actualpractice it attains the features of advantage enumerated as desirableinthe statement of the invention and the above description.

It is apparent that changes in the details of construction, and in thecombination and arrangement of parts may be resorted to withoutdeparting from the spirit or scope of the invention as hereinafterclaimed or sacri- Having thus described my invention what I claim as newis: r

1. An air heater of the class described comprising a rectangular baseframe, a rectangular casing rising from the base frame and restingthereon, a top on the casing, one'end wall of the casing having anopening in the upper portion thereof and the other end wall of thecasinghaving an opening in the bot tom thereof, a pair of longitudinalwalls mounted in the casing in spaced relation to the side walls and inspaced relation to each other to form an air compartment, a hot platecurved bottom on the lower edges of the longitudinal walls, a top wallon the longitudinal. walls, a bafile wall extending between the upperportions of the longitudinal walls from the said one end wall andterminating a distance from the other end wall of the casing, andburners mounted in the base'frame under thehot plate.

2. An air heater of the class described comprising a rectangular baseframe, a rectangular casing rising from the base frame and restingthereon, a top on the casing, one end wall ofthe casing having anopening in the upper portion thereof and the other end wall of thecasing having anopening inthe bottom thereof, a pair of longitudinalwalls mounted in the casing in spaced relation to the side walls and inspaced relation to each other to form an air compartment, a hot platecurved bottom 011 the lower edges of the longitudinal Walls, a top wallon the longitudinal walls, a bailie wall extending between the upperportions of the longitudinal walls from the said one end wall andtermifan, and a reticulated sheet across nating a distance from theother end wall of the casing, burners mounted in the base frame underthe hot plate, and amotor ope 'ated fan mounted in the casing adjacentthe opening in said other end wall for sucking air inwardlytherethrough.

3. An air heater of the class described comprising a rectangular baseframe, a rectangula r casing rising from the base frame and restingthereon, a top on the casing, one end wall of the casing having anopening in the upper portion thereof and the other end wall of thecasing having an opening in the bot tom portion thereof, a pair oflongitudinal walls mounted in thecasing in spaced relation to the sidewalls and in spaced relation to each other to form an air compartment, ahot plate curved bottom on the lower edges of the longitudinal walls, atop wall on the longitudinal walls,a baffle wall extending between theupper, portions of the longitudinal walls from the said one end wall toterminate a distance from the other end wall of the casing, burnersmounted in the base frame under the hot plate, a motor operated fanmount ed in the-casing adjacent the opening in said other end wall forsucking air inwardly therethrough, and a cylindrical member about saidfan.

4., An air heater of the class described comprising'a rectangular baseframe, a rectangular casing rising from the base frame and restingthereon, a top on the .casing, one end wall of the casing having anopening in the upper portion thereof and the other end wall of thecasing having an opening in the bottom thereof, a pair of longitudinalwalls mounted in the casing in spaced relation to the side walls and inspaced relation to each other to form an air compartment, a hot platecurved bottom on the lower edges of the longitudinal Walls, a top wallon the longitiidinal walls, a bafl'le wall extending between the upperportions of the longitudinal walls from the said one end Wall toterminate a distance from the other end wall of the casing, burnersmounted in the base. frame under the-hot plate, a motor operated fanmounted in the casing adjacent the opening in said other end wall forsucking air inwardly there through, a cylindrical member about said 7the opening in said other end wall.

An air heater of the class described comprising a rectangular baseframe, a rectangular casing rising from the base frame and restingthereon, a top on the casing, one end wall of the casing having anopening in the upper portion thereof and the other end wall of thecasing having an opening in the bottom thereof, a pair of longitudinalwalls mounted in the, casing in spaced relation to the side walls and inspaced relation to each other to form an air compartment, a hot platecurved bottom on the lower edges of the longitudinal walls, a top wallon the longitudinal Walls, a' baffle wall extending between the upperportions of the longitudinal walls from the said one end wall toterminate a distance from the other end wall of the casing, burnersmounted in the base frame under the hot plate, a motoroperated fanmounted in the casing adjacent the opening in said other end wall forsucking air inwardly therethrough, a cylindrical member about said fan,and a reticulated sheet across the opening in said other end wall, saidcasing having formed on its under edge inwardly extending flange to reston inwardly extending flange formed on the upper edges of the baseframe.

6. An air heater of the class described comprising a rectangular baseframe, a rectangular casing rising from the base frame and restingthereon, a top on the casing, one end Wall of the casing'having anopening in the upper portion thereof and the other end wall of thecasing having an opening in the bottom' thereof, a pair of longitudinalWalls mounted in the casing in spaced relation to the side Walls and inspaced relation to each other to form an air compartment, a hot platecurved bottom on the lower edges of the longitudinal Walls, a top wallon the longitudi- .nalwalls, a bafile Wall extending between the upperportions of the longitudinal Walls from the said one end Wall toterminate a distance from the other end wall of the casing, burnersmounted in the base frame under the hot plate, a motor operated fanmounted in the casing adjacent the opening in said other end wall forsucking air inwardly therethrough, a cylindrical member about said fan,and a reticulated sheet across the opening in said other end wall, saidcasing having formed on its under edge inwardly extending flange to reston inwardly extending flange formed on the upper edges of the baseframe, and a longitudinal bar in the base frame for supporting theburner.

7. An air heater of the class described comprising a rectangularbaseframe, a rectangular casing rising from the base frame and restingthereon, a top on the casing, one end wall of the casing having anopening in the upper portion thereof and the other end Wall of thecasing having an opening in the bottom thereof, a pair of longitudinalwalls mounted in the casing in spaced relation to the side walls and inspaced relation to each other to form an air compartment, a hot platecurved bottom on the lower edges of the longitudinal Walls, a top wallon the longitudinal walls, a baflie wall extending between the upperportions of the longitudinal Walls from the said one end wall toterminate a distance from the other end wall of the casing, burnersmounted in the base frame under the hot plate, a motor operated fanmounted in the casing adjacent the opening in said other end wall forsucking air inwardly therethrough,

a cylindrical member about said fan, and a reticulated sheet across theopening in said other end wall, said casing having formed RUDOLPHFROELICH.

